187973442642 has 8 divisors (see below), whose sum is σ = 375946885296. Its totient is φ = 62657814212.

The previous prime is 187973442641. The next prime is 187973442647. The reversal of 187973442642 is 246244379781.

It is a sphenic number, since it is the product of 3 distinct primes.

187973442642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (187973442641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15664453548 + ... + 15664453559.

It is an arithmetic number, because the mean of its divisors is an integer number (46993360662).

Almost surely, 2^187973442642 is an apocalyptic number.

187973442642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

187973442642 is a wasteful number, since it uses less digits than its factorization.

187973442642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31328907112.

The product of its digits is 16257024, while the sum is 57.

The spelling of 187973442642 in words is "one hundred eighty-seven billion, nine hundred seventy-three million, four hundred forty-two thousand, six hundred forty-two".